Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6284382 | Antireflection film and manufacturing method thereof | Hiroichi Ishikawa, Barret Lippey, Tomio Kobayashi, Yoshihiro Oshima, Masataka Yamashita +2 more | 2001-09-04 |
| 6151125 | Method and apparatus for measuring surface reflectance of light-transmitting type antireflection optical function film and method of producing the film | — | 2000-11-21 |
| 6005472 | Inner resistor for cathode-ray tube | — | 1999-12-21 |
| 4647815 | Resistors for use in cathode ray tubes | Yoshirou Ishikawa, Kazuyuki Ohta | 1987-03-03 |